Transfer tail retainer



Nov. 15, 1966 c. E. KIRCHNER, JR., ETAL 3,285,530

TRANSFER TAIL RETAINER Filed 001:. 22. 1965 Figure1 M Z 5 r Figure 2 mml INVENTORS Car/ Edward Kirchner, Jr. E/isha Johnson, Jr.

A f/orney United States Patent 3,285,530 TRANSFER TAIL RETAINER Carl E. Kirchner, Jr., Taylors, S.C., and Elisha Johnson, In, Charlotte, N.C., assignors to Fiber Industries, Inc., a corporation of Delaware Filed Oct. 22, 1965, Ser. No. 501,883 3 Claims. (Cl. 242125.1)

This invention relates to a transfer tail retainer on a yarn bobbin. More particularly, the invention is directed to a unique apparatus for retaining yarn transfer tails on a bobbin during yarn Windup.

In the windup of yarns on bobbins, difiiculties are encountered in maintaining the transfer tail of the yarn, i.e., the initial end of the yarn placed on the bobbin, in an orderly manner, while the yarn is being wound on the bobbin. It is essential that the yarn transfer tail be readily available after the yarn on the bobbin has been used so as to tie in the yarn from the next bobin which is to be used. If the yarn transfer tail is Wound on the bobbin along with the rest of the yarn, the yarn transfer tail is only available after all of the yarn on the bobbin is used requiring a considerable delay in production of the finished product in finding the yarn transfer tail and tying the yarn transfer tail to the yarn of the next bobbin to be used.

By this invention, an apparatus has been devised that retains the yarn transfer tail during Winding of the yarn on the bobbin and provides space for sufficient yarn for a transfer tail to wind outside the traverse prior to acquisition of the yarn by the traverse and subsequent build of yarn on the core. This apparatus consists of a combination of a straight cylindrical tube yarn bobbin and a detachable cylindrical cap having means for retaining a yarn end. The detachable cylindrical cap is capable of being retained on one end of the straight cylindrical tube yarn bobbin while the yarn is being wound onto the yarn bobbin. The detachable cylindrical cap is of such size to provide a minimum space for a transfer tail of said yarn to be wound onto said detachable cap prior to the windup of the yarn on the straight cylindrical tube yarn bobbin.

The apparatus of this invention can be more fully understood by reference to the accompanying drawing representing an embodiment of the invention in which:

FIGURE 1 is a side view of the detachable cylindrical cap and FIGURE 2 is a side view of the combination of the detachable cylindrical cap'and a straight cylindrical tube yarn bobbin partly shown in section.

Referring to FIGURES 1 and 2, the detachable cylindrical cap which can be made out of plastic materials such as Celcon (polyacetal), nylon, metal, cardboard or other suitable materials, contains indentations 11 with grooves 12 for a rolling O ring indicated as 13 in FIGURE 2. The purpose of the O ring 13 is to maintain the detachable cylindrical cap 10 onto the straight cylindrical tube bobbin 14 while the yarn is being placed on the bobbin. Other means for locking the detachable cylindrical cap 10 into the straight cylindrical tube bobbin 14 can include spring expanders, centrifugal eXpanders and the like. The indentations are shaped to fit into the inner surface of the straight cylindrical tube bobin 14. The detachable cap 10 contains an angled slit in the end opposite the end 3,285,530 Patented Nov. 15, 1966 containing the indentations 11. The angled slit 15 which can range from about 10 to about from the horizontal edge is preferably utilized to acquire and retain the end of the transfer tail in place while the yarn is being wound on the straight cylindrical tube bobbin. Other means of yarn acquisition and end retention means can include hooks, fingers and the like.

The cylindrical detachable cap 10 can be easily attached to empty straight cylindrical tube yarn bobbins prior to chucking of the yarns and can be easily detached from full bobbins after doffing. The cylindrical cap initially acquires the yarn during running string up, retains the end during winding and provides space for sutficient yarn for a transfer tail to wind outside the traverse prior to acquisition of the yarn by the traverse and subsequent build of yarn on the core of the straight cylindrical tube yarn bobbin.

It is understood that the foregoing description is merely illustrative of preferred embodiments of the invention of which many variations may be made by those skilled in the art within the scope of the following claims without departing from the spirit thereof.

What is claimed is:

1. An apparatus for retaining yarn transfer tails on a bobbin during yarn windup comprising, in combination, a straight cylindrical tube yarn bobbin and a detachable cylindrical cap having an indentation on one end of said cap, resilient means on the indentation of said cap to maintain said cap on to said straight cylindrical tube and the combination of said indentation and resilient means fits within the inner surface of said straight cylindrical tube yarn bobbin wherein the remaining outer surface of said detachable cylindrical cap is a smooth continuation of the outer surface of the straight cylindrical tube yarn bobbin, said detachable cylindrical cap capable of being retained on one end of said straight cylindrical tube yarn bobbin while the yarn is being wound onto said bobbin and said detachable cap being of such size to provide at least a minimum space for a transfer tail of said yarn to be wound onto said detachable cap prior to the windup of said ya-nn on said straight cylindrical tu'be yarn bobbin.

2. The apparatus of claim 1 wherein the resilient means on said indentation of said detachable cap is a sliding O ring between the indentation of said detachable cap and the inner surface of said straight cylindrical tube yarn bobbin.

3. The apparatus of claim 1 wherein the detachable cylindrical cap has an angled slit in the end of said cap opposite, the end containing the indentation, said slit used for retaining the yarn transfer tail.

References Cited by the Examiner UNITED STATES PATENTS 2,481,031 9/ 1949 McDermott. 2,625,334 1/1953 Ewing et a1. 2,970,789 2/ 1961 Binns 242 .1

FRANK J. COHEN, Primary Examiner.

GEORGE F. MAUTZ, Examiner. 

1. AN APPARATUS FOR RETAINING YARN TRANSFER TAILS ON A BOBBIN DURING YARN WINDUP COMPRISING, IN COMBINATION, A STRAIGHT CYLINDRICAL TUBE YARN BOBBIN AND A DETACHABLE CYLINDRICAL CAP HAVING AN INDENTATION ONE ON END OF SAID CAP, RESILIENT MEANS ON THE INDENTATION OF SAID CAP TO MAINTAIN SAID CAP ON TO SAID STRAIGHT CYLINDRICAL TUBE AND THE COMBINATION OF SAID INDENTATION AND RESILIENT MEANS FITS WITHIN THE INNER SURFACE OF SAID STRAIGHT CYLINDRICAL TUBE YARN BOBBIN WHEREIN THE REMAINING OUTER SURFACE OF SAID DETACHABLE CYLINDRICAL CAP IS A SMOOTH CONTINUATION OF THE OUTER SURFACE OF THE STRAIGHT CYLINDRICAL TUBE YARN BOBBIN, SAID DETACHABLE CYLINDRICAL CAP CAPABLE OF BEING RETAINED ON ONE END OF SAID STRAIGHT CYLINDRICAL TUBE YARN BOBBIN WHILE THE YARN IS BEING WOUND ONTO SAID BOBBIN AND SAID DETACHABLE CAP BEING OF SUCH SIZE TO PROVIDE AT LEAST A MINIMUM SPACE FOR A TRANSFER TAIL OF SAID YARN TO BE WOUND ONTO SAID DETACHABLE CAP PRIOR TO THE WINDUP OF SAID YARN ON SAID STRAIGHT CYLINDRICAL TUBE YARN BOBBIN. 